Handheld motorized fingernail gel dispenser

ABSTRACT

A fingernail gel dispenser includes a container for holding fingernail gel, a heating element for heating the fingernail gel in the container, and a dispenser nozzle. A motorized dispensing mechanism is configured to dispense the fingernail gel from the container through the dispenser nozzle. A user-operable control is configured to enable a user of the dispenser to operate the dispensing mechanism with a finger of a hand that is holding the dispenser.

FIELD OF THE INVENTION

The present invention relates to fingernail gel dispenser devices. More particularly, the present invention relates to a handheld motorized fingernail gel dispenser.

BACKGROUND OF THE INVENTION

A common method of artificially extending and thickening a fingernail includes application of a gel to the outer surface and tip of the fingernail. For example, the gel may be applied in steps. Each succeeding step involves application of another row, arc, or layer of fingernail extension gel to the fingernail, until the desired length or thickness is achieved. Typically, the gel is cured by exposure to ultraviolet or visible light (e.g., as generated by a light emitting diode) following each application so as to cause the gel to harden. For example, the gel that is applied in each step may be cured prior to another application of the gel in a succeeding step.

Once the fingernail has been extended to the desired length and the applied gel has hardened, the fingernail may be shaped by filing, cutting, or otherwise. In some cases, the extended fingernail may then be coated with nail polish or otherwise adorned.

Typically, the gel used in extending the fingernails is kept in a sealed or closed container, such as a bottle or a jar, until the gel is applied. Typically, the gel is applied by dipping a brush or other applicator into the container of gel. In some cases, the bottle or jar may include a cap or lid with a built-in brush or applicator. The gel on the applicator may then be applied to the fingernail. The applicator may be repeatedly dipped into the container and applied to the fingernail until application of the gel is complete.

SUMMARY OF THE INVENTION

There is thus provided, in accordance with an embodiment of the present invention, a fingernail gel dispenser including: a container for holding fingernail gel; a dispenser nozzle; a heating element for heating the fingernail gel in the container; a motorized dispensing mechanism that is configured to dispense the fingernail gel from the container through the dispenser nozzle; and a user-operable control that is configured to enable a user of the dispenser to operate the dispensing mechanism with a finger of a hand that is holding the dispenser.

Furthermore, in accordance with an embodiment of the present invention, the dispenser nozzle is removable from the dispenser and is replaceable onto the dispenser.

Furthermore, in accordance with an embodiment of the present invention, the dispenser nozzle includes a bend.

Furthermore, in accordance with an embodiment of the present invention, the container is removable from the dispenser.

Furthermore, in accordance with an embodiment of the present invention, the gel is dispensed from the container via a nozzle of the container.

Furthermore, in accordance with an embodiment of the present invention, the container nozzle is insertable into a distal end of the dispenser nozzle.

Furthermore, in accordance with an embodiment of the present invention, the container includes a plunger configured to be pushed into the container to dispense the gel from the container.

Furthermore, in accordance with an embodiment of the present invention, the dispensing mechanism includes a rod, the dispensing mechanism configured to advance the rod against the plunger to dispense the gel from the container.

Furthermore, in accordance with an embodiment of the present invention, the dispensing mechanism includes a transmission to convert a rotation of a shaft of a motor of the dispensing mechanism to a linear motion of the rod.

Furthermore, in accordance with an embodiment of the present invention, the transmission includes a threaded worm.

Furthermore, in accordance with an embodiment of the present invention, the rod is coupled to a position sensor for sensing a position of the rod.

Furthermore, in accordance with an embodiment of the present invention, the position sensor includes a potentiometer.

Furthermore, in accordance with an embodiment of the present invention, a base of the rod that is configured to move along a threated worm of the dispensing mechanism is coupled to movable wiper contact of the potentiometer.

Furthermore, in accordance with an embodiment of the present invention, the potentiometer is a linear potentiometer.

Furthermore, in accordance with an embodiment of the present invention, the dispenser includes an indicator for indicating an amount of the gel that remains in the container based on the position that is sensed by the position sensor.

Furthermore, in accordance with an embodiment of the present invention, the dispenser includes a temperature sensor to sense a temperature indicative of a temperature of the gel in the container.

Furthermore, in accordance with an embodiment of the present invention, an operator control of the dispenser is operable to cause the dispensing mechanism to continuously dispense the gel from the container and to stop dispensing the gel from the container.

Furthermore, in accordance with an embodiment of the present invention, an operator control is configured to cause the dispensing mechanism to dispense the gel as long as the operator control is depressed, and to stop dispensing the gel from the container when the operator control is released.

Furthermore, in accordance with an embodiment of the present invention, the dispenser includes a storage battery.

Furthermore, in accordance with an embodiment of the present invention, a control for operating the heater is located on a charger base for charging the storage battery.

BRIEF DESCRIPTION OF THE DRAWINGS

In order for the present invention, to be better understood and for its practical applications to be appreciated, the following Figures are provided and referenced hereafter. It should be noted that the Figures are given as examples only and in no way limit the scope of the invention. Like components are denoted by like reference numerals.

FIG. 1 schematically illustrates a handheld fingernail gel dispenser inserted in its base, in accordance with an embodiment of the present invention.

FIG. 2 schematically illustrates the handheld fingernail gel dispenser shown in FIG. 1 as removed from its base.

FIG. 3 schematically illustrates the handheld fingernail gel dispenser shown in FIG. 2 with its gel container access cover removed.

FIG. 4 schematically illustrates an exploded view of the components of the handheld fingernail gel dispenser shown in FIG. 2.

FIG. 5 schematically illustrates an exploded view of a dispensing mechanism of the handheld fingernail gel dispenser shown in FIG. 4.

FIG. 6 shows another exploded view of the dispensing mechanism shown in FIG. 5.

DETAILED DESCRIPTION OF THE INVENTION

In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be understood by those of ordinary skill in the art that the invention may be practiced without these specific details. In other instances, well-known methods, procedures, components, modules, units and/or circuits have not been described in detail so as not to obscure the invention.

Although embodiments of the invention are not limited in this regard, discussions utilizing terms such as, for example, “processing,” “computing,” “calculating,” “determining,” “establishing”, “analyzing”, “checking”, or the like, may refer to operation(s) and/or process(es) of a computer, a computing platform, a computing system, or other electronic computing device, that manipulates and/or transforms data represented as physical (e.g., electronic) quantities within the computer's registers and/or memories into other data similarly represented as physical quantities within the computer's registers and/or memories or other information non-transitory storage medium (e.g., a memory) that may store instructions to perform operations and/or processes. Although embodiments of the invention are not limited in this regard, the terms “plurality” and “a plurality” as used herein may include, for example, “multiple” or “two or more”. The terms “plurality” or “a plurality” may be used throughout the specification to describe two or more components, devices, elements, units, parameters, or the like. Unless explicitly stated, the method embodiments described herein are not constrained to a particular order or sequence. Additionally, some of the described method embodiments or elements thereof can occur or be performed simultaneously, at the same point in time, or concurrently. Unless otherwise indicated, the conjunction “or” as used herein is to be understood as inclusive (any or all of the stated options).

In accordance with an embodiment of the present invention, a handheld fingernail gel dispenser is configured to dispense fingernail extension gel from an internal container. The handheld fingernail gel dispenser may be shaped so as to enable convenient holding, manipulation, and operation by a single hand of a user. For example, a user may include a professional nail technician or manicurist, a user of a home fingernail extension kit, or another user. In some cases, the handheld fingernail gel dispenser may be held and manipulated in similarly to manipulation of a pen or pencil.

Although, for convenience, reference is made herein to fingernails, all such references should be understood as including toenails or other objects or body parts to which fingernail gel may be applied. Reference herein to gels should be understood as including a liquid, paste, cream, or other suitable dispensable substance or material. Reference herein to fingernail gels should be understood as referring to any dispensable gel or substance that may be advantageously dispensed by a handheld fingernail gel dispenser as described herein, with relation to care of fingernails, toenails, or other body parts. For example, reference to fingernail gel may refer to a substance for extending, thickening, repairing, or otherwise enhancing the appearance or durability of fingernails, for softening or removing cuticles, or other dispensable substances related to care of fingernails.

For example, the handheld fingernail gel dispenser may include a dispensing mechanism for extruding the gel from a replaceable or refillable container or canister. The handheld fingernail gel dispenser may be provided with one or more controls that may be operated by a user who is holding and maneuvering the handheld fingernail gel dispenser. The controls may be positioned so as to enable a typical user to operate the controls with fingers of the hand that is holding the handheld fingernail gel dispenser. Control of operation of the dispensing mechanism while operating the dispensing mechanism may enable the user to control dispensing of the gel in order to extend the fingernail to a desired length and shape.

For example, operation of the controls may control operation of the dispensing mechanism. Thus, the user who is holding the handheld fingernail gel dispenser may control when the gel is dispensed from the canister. In some cases, the controls may enable controlling an amount of gel that is dispensed, a rate of dispensing the gel, a temperature of the gel, or other operation of the handheld fingernail gel dispenser. In some cases, the controls may enable selection between continuous and pulsed intermittent dispensing.

The container of the gel may be held in an internal space or cavity within the handheld fingernail gel dispenser. For example, one or more covers may shield the gel in the container from one or more environmental conditions that could otherwise contaminate, degrade, or interfere with the function of the gel. For example, in some cases exposure of the gel to sunlight or artificial lighting prior to application to the fingernail could lead to premature curing and hardening of the gel. Exposure of the gel to air prior to application to the fingernail could lead to contamination of the gel with airborne substances or microbes. Shielding of the gel container by covers of the handheld fingernail gel dispenser may prevent such degradation, contamination, or unwanted hardening of the gel.

The dispensing mechanism may be electrically powered. In order to enable full maneuverability without encumbrance by wires, the handheld fingernail gel dispenser may be wireless. For example, the handheld fingernail gel dispenser may include an internal power source. The internal power source may include a rechargeable storage battery or a replaceable battery. In some cases, the handheld fingernail gel dispenser may be configured to connect to a charger that is configured to recharge an internal storage battery. For example, the charger may include electrical contacts that contact corresponding electrical contacts on the handheld fingernail gel dispenser, e.g., when a handle or other part of the handheld fingernail gel dispenser is inserted into a receptacle of the charger, when a plug of the charger is inserted into a corresponding socket of the handheld fingernail gel dispenser, or otherwise. The charger may be connectable by a cord to a line voltage or mains, or to another source of electrical power. In some cases, the handheld fingernail gel dispenser may include photovoltaic cells, a motion operated generator, or another component for generating electrical power for recharging a storage battery. In some cases, the handheld fingernail gel dispenser may be operated while connected by an electrical wire to an external source of electrical power.

The gel that is dispensed from the gel container by the dispensing mechanism may be conveyed to a target region by a nozzle. For example, the target region may include an end of a fingernail or toenail, or another surface or region to which the gel is to be dispensed. The nozzle may be shaped to enable convenient handling and operation of the handheld fingernail gel dispenser. For example, the nozzle may include a bend to facilitate holding of the handheld fingernail gel dispenser by the user in a comfortable manner (e.g., to enable firm, steady, and comfortable grasping of the handheld fingernail gel dispenser by the user's hand as the fingers of the hand that holds the handheld fingernail gel dispenser operate the controls) while the fingers to whose nails the gel is to be applied are likewise held in a comfortable manner (e.g., horizontally or otherwise).

A dispensing nozzle may be configured to be detachable from the handheld fingernail gel dispenser. For example, a separate disposable nozzle may be attached to the handheld fingernail gel dispenser for separate use on each person whose fingernails are being extended. Such use of disposable nozzles may facilitate sterility since a nozzle that was used on, and may have come into physical contact with, the fingernails of one person may not be used on another. Alternatively, detachment of the nozzle from the handheld fingernail gel dispenser may enable thorough cleaning or sterilization of the nozzle (e.g., in a special cleaning or sterilization chamber or unit) between uses. In addition, where different types of gels are used, use of disposable or interchangeable nozzles may prevent mixing of the different gels. Alternatively or in addition, nozzles of different shapes or sizes, or with different shapes or sizes of openings or bores, may be attached to the handheld fingernail gel dispenser. For example, each type of nozzle may be suitable for a particular type of use, or to a preference of a particular user. Such particular types of uses may include, for example, a particular type of use (e.g., extending, strengthening, repairing, enhancing, or other use on a fingernail), size of a fingernail, an intended shape or thickness of a desired fingernail extension, characteristic of the gel (e.g., viscosity, density, or other characteristic), or otherwise particular type of use.

A handheld fingernail gel dispenser as described herein may be advantageous over other types of dispenser of fingernail extension gel.

For example, application of gel using the handheld fingernail gel dispenser may enable more accurate control of an amount of dispensed gel and of a location to which the dispensed gel is applied than traditional application by a brush or applicator. Since dispensing of the gel is motorized, the user may be free to manipulate the handheld fingernail gel dispenser to achieve a desired effect or result. For example, the user may bring the dispensing nozzle of the handheld fingernail gel dispenser close to a region of a fingernail in order to increase the amount of gel that is dispensed to that region. The user may move the dispensing nozzle in a desired path along the fingernail in order to dispense the gel in a desired shape or form, e.g., prior to hardening or curing the gel. Thus, in some cases, there may be no need for extensive filing in order to correct the shape of the extended fingernail after excessive initial placement of gel, e.g., as is typical after application by a traditional brush or applicator.

Since the gel is dispensed automatically, use of the handheld fingernail gel dispenser may be easier to learn by a beginning user than traditional application with a brush of applicator.

Application of gel using the handheld fingernail gel dispenser may enable more efficient use of the gel. When using the handheld fingernail gel dispenser, the only amount of the gel that is exposed to the environment is the gel that has already been dispensed. The gel in the gel container may continue to be used until all, or almost all, of the gel in the container is removed from the container. Gel cannot be spilled from the container that is enclosed within the handheld fingernail gel dispenser. Furthermore, when the handheld fingernail gel dispenser is used with a disposable nozzle, or with a nozzle that is thoroughly cleaned or sterilized between uses, potential contaminants may not be transferred from one person's fingernails to another's.

On the other hand, with traditional application of the gel from an open jar by repeated dipping of a brush or applicator, the gel remaining in the jar could be contaminated by exposure to the air and to airborne dust, microbes, or other airborne particles when the jar is open. In addition, the gel remaining in the jar could be contaminated by particles (e.g., of dirt, dust, hair, skin, or other contaminating substances) that may be transferred from the fingernail to the gel in the jar by the brush or applicator, or in excess gel that is returned to the jar. In some cases, it could be difficult to maneuver the applicator to the bottom of the container or jar in order to remove and utilize the entire contents of the jar.

FIG. 1 schematically illustrates a handheld fingernail gel dispenser inserted in its base, in accordance with an embodiment of the present invention. FIG. 2 schematically illustrates the handheld fingernail gel dispenser shown in FIG. 1 as removed from its base.

Fingernail gel dispenser set 11 includes handheld fingernail gel dispenser 10 and charger base 12. Handheld fingernail gel dispenser 10 may include one or more storage batteries (to be understood as including capacitors or another rechargeable internal power supply) that enable handheld operation of handheld fingernail gel dispenser 10 when handheld fingernail gel dispenser 10 is disconnected from charger base 12.

In the example shown, charger base 12 may be connected to an external power supply (e.g., line voltage, electrical generator, or other source of electrical power) via power cable 14. For example, charger base 12 may include circuitry (e.g., that includes at least a transformer and a rectifier) that converts an alternating current line voltage to a voltage (e.g., a direct current low voltage) that is suitable for charging an internal storage battery of handheld fingernail gel dispenser 10.

In the example shown, handheld fingernail gel dispenser 10 may be recharged by charger base 12 by insertion handheld fingernail gel dispenser 10 into charger opening 35 of charger base 12. In the example shown, a floor of charger opening 35 includes a set of charger electrical contacts 37. Insertion end 31 of handheld fingernail gel dispenser 10 may be similarly provided with a corresponding set of dispenser electrical contacts 33. For example, dispenser electrical contacts 33 may include at least charging contacts 34 and 36. When insertion end 31 of handheld fingernail gel dispenser 10 is inserted into charger opening 35, and when charger base 12 is connected to a power supply via power cable 14, electrical current may pass between charging contacts 34 and 36 to charge an internal storage battery of handheld fingernail gel dispenser 10.

Alternatively or in addition, handheld fingernail gel dispenser 10 may be otherwise connected to a charger or charger base. For example, the charger base may include a plug with electrical contacts that are configured to contact corresponding electrical contacts within a socket of the handheld fingernail gel dispenser. As another example, a charger or charger base may include, or may enable connection of, an electrical cable for connecting the charger to (e.g., a suitable socket of) the handheld fingernail gel dispenser.

Handheld fingernail gel dispenser 10 may include one or more indicator panels 18. Indicator panel 18 may be configured to be readily visible. For example, indicator panel 18 may be placed on a side of handheld fingernail gel dispenser 10 that is configured to ordinarily face a user who is holding handheld fingernail gel dispenser 10 when handheld fingernail gel dispenser 10 is in use.

For example, indicator panel 18 may include a charge indicator 20 that is configured to indicate the current electrical charge of a storage battery of handheld fingernail gel dispenser 10. For example, charge indicator 20 may connect to a voltage sensor or current sensor that measures a quantity that is indicative of the remaining charge. In the example shown, charge indicator 20 includes a digital alphanumeric display that indicates a percentage of full charge. Alternatively or in addition, charge indicator 20 may include an analog display (e.g., indicator needle or dial, or other analog display) or digital display that otherwise indicates the current charge of the storage battery (e.g., a displayed bar or circle indicating the remaining time for operation of handheld fingernail gel dispenser 10 without recharging, or otherwise indicating the charge of the storage battery).

In some cases, handheld fingernail gel dispenser 10 may be configured to warm the gel to a predetermined temperature, e.g., to lower the viscosity of the gel to facilitate controlled dispensing of the gel. For example, handheld fingernail gel dispenser 10 may include one or more internal heaters to heat the gel that is contained in a gel container within handheld fingernail gel dispenser 10.

A command to heat the gel may be provided via charger base 12. For example, dispenser electrical contacts 33 may include heater control contacts 38 and 40. Charger base 12 may include a heater control 16 to send a command to operate the heater of handheld fingernail gel dispenser 10. In the example shown, heater control 16 includes a pushbutton. In other examples, heater control 16 may include a lever, touch panel, toggle switch, knob, or other control for enable charger base 12 to apply electrical power via heater contacts 38 and 40.

In some cases, handheld fingernail gel dispenser 10 may be configured such that a heater of handheld fingernail gel dispenser 10 may operate only when handheld fingernail gel dispenser 10 is inserted into charger base 12 (e.g., when charging contacts 34 and 36 are in electrical contact with the corresponding charger electrical contacts 37 in charger base 12). For example, such a configuration may prevent rapid discharging of the storage battery of handheld fingernail gel dispenser 10. In some cases, e.g., where such a configuration is not necessary, a control for operating the heater may be included in operator controls 27 or elsewhere on handheld fingernail gel dispenser 10. In some cases, operation of the heater may be automatically controlled, e.g., by a thermostat.

A gel container of handheld fingernail gel dispenser 10 may include a temperature sensor (e.g., in contact with a wall of the gel container, within the gel container, near the gel container, or elsewhere within handheld fingernail gel dispenser 10). Display panel 18 may include temperature indicator 22. Temperature indicator 22 may be configured to display a result of a temperature measurement by the temperature sensor. In the example shown, temperature indicator 22 includes a digital alphanumeric display of the temperature in degrees Celsius. Alternatively or in addition, temperature indicator 22 may include an analog display (e.g., indicator needle or dial, or other analog display), an indicator light (e.g., one or more light emitting diodes or other lights that indicate whether or not the temperature of the gel is in a target range that facilitates proper dispensing of the gel), or another indication of the current temperature of the gel (e.g., in other temperature units, compared to an optimum gel temperature, or otherwise).

Gel container access cover 26 of handheld fingernail gel dispenser 10 may be opened or removed to enable access to a container of fingernail gel. For example, when gel container access cover 26 is opened, an internal gel container chamber may be exposed. Exposure of the gel container chamber may enable removal or replacement of a container for holding fingernail gel. The gel container may be removed from the gel container chamber when the container is empty. In some cases, a gel container may be removed from the gel container chamber when a user of handheld fingernail gel dispenser 10 wishes to change the type of gel that is dispensed. The removed container may be replaced with another filled container prior to replacing or closing gel container access cover 26. In some cases, gel container access cover 26 may cooperate with an interlock system that prevents operation of a dispensing mechanism, or another mechanism or device of handheld fingernail gel dispenser 10, when gel container access cover 26 is opened.

Gel container access cover 26 may include one or more vents 25. For example, vent 25 may enable air to circulate within handheld fingernail gel dispenser 10 to prevent overheating of the gel container, or of any internal mechanisms. Alternatively or in addition, a vent may be located elsewhere on handheld fingernail gel dispenser 10.

For example, the gel container may be a disposable canister that may be disposed when emptied. As another example, the gel container may be refillable and reusable. Such a refillable gel container may be removed from handheld fingernail gel dispenser 10 when empty for cleaning, refilling, and replacement into handheld fingernail gel dispenser 10.

The dispensing mechanism of handheld fingernail gel dispenser 10 may be operated to dispense gel from the gel container via dispenser nozzle 28. For example, dispenser nozzle 28 may be configured to shape gel that is extruded by the dispensing mechanism into a shape that is suitable for application to a fingernail. Dispenser nozzle 28 may be bent to facilitate application of the dispensed gel to the fingernail. For example, the bending of dispenser nozzle 28 may facilitate application of the gel while holding handheld fingernail gel dispenser 10 in a comfortable manner in a single hand. The bending of dispenser nozzle 28 may also enable an unobstructed view of the end of the fingernail to which the gel is being applied by a user who is holding, manipulating, and operating handheld fingernail gel dispenser 10.

In some cases, a distal end of dispenser nozzle 28 may be provided with a brush or other structure for facilitating application of gel to a particular part of a fingernail or other surface, or for spreading applied gel on the surface. In some cases, the brush or structure may be removable from, or attachable to, dispenser nozzle 28.

Dispenser nozzle 28 may be removable from handheld fingernail gel dispenser 10. A fingernail gel dispenser set 11 may include one or more replacement nozzles 29. In some cases, at least some replacement nozzles 29 may differ from one another in shape, size, bend angle, cross section, or otherwise.

For example, a size or shape of a bore of a replacement nozzle 29 may determine a size or shape of the dispensed gel. For example, a round or oval bore may dispense a circular or elliptical string or filament of gel having a diameter that is determined by the diameter of the bore. An elongated bore may dispense a flattened ribbon of gel whose dimensions are determined by that of the bore. The different sizes and shapes of the bores of different replacement nozzles 29 may be suitable for different types of applications or uses, or for different user preferences.

For example, the different types of replacement nozzles 29 may enable selection of a replacement nozzle 29 that is best suited for particular circumstances. Such circumstances may include differently sized or shaped fingernails, type of application (e.g., extension, repair, or otherwise), type of gel used, environmental conditions (e.g., ambient temperature, humidity, wind or air currents, lighting, or other environmental conditions), or other circumstances.

For example, dispenser nozzle 28 may be removed after application of gel to the fingernails of one person. A different replacement nozzle 29 or a cleaned and sterilized dispenser nozzle 28 may be attached to handheld fingernail gel dispenser 10 before applying the gel to fingernails of another person. Thus, replacing (or cleaning and sterilizing) dispenser nozzle 28 between applications to different people may prevent transfer of potentially harmful or repulsive trace substances between different people. As another example, dispenser nozzle 28 may be replaced by a replacement nozzle 29 when changing circumstances indicate such a change.

Dispenser nozzle 28 or a replacement nozzle 29 may include one or more of threading, latches, grooves or indentations, or other securing structure that may engage cooperating structure of handheld fingernail gel dispenser 10. The securing structure may engage the cooperating structure to secure that dispenser nozzle 28 or replacement nozzle 29 to handheld fingernail gel dispenser 10. For example, the cooperating structure may include threading, a groove or indentation, a latch, or other cooperating structure that may engage the securing structure of the dispenser nozzle 28, and in some cases, handheld fingernail gel dispenser 10 or the dispenser nozzle 28 or replacement nozzle 29 may include a release mechanism (e.g., to withdraw a latch from a corresponding groove or indentation, or to otherwise release the securing structure or cooperating structure) to enable removal of the dispenser nozzle 28 or replacement nozzle 29 from handheld fingernail gel dispenser 10.

In some cases, indicator panel 18 may include a remaining gel indicator 24. For example, remaining gel indicator 24 may be in communication with a sensor that senses an amount of gel that remains in a gel container. Alternatively or in addition, remaining gel indicator 24 may include a transparent or translucent window through which a level of gel in the gel container may be directly visible.

For example, a sensor for sensing an amount of gel in the gel container may be coupled to a moving part of the dispensing mechanism. In this case, a position of the moving part may progress as the gel container is emptied. Alternatively or in addition, an appropriate mechanical, optical, acoustic, electromagnetic, or other sensor may be configured to sense an amount of gel that remains in the gel container.

In the example shown, remaining gel indicator 24 includes a digital display of a bar scale, in which the number of illuminated bars is indicative of the amount of remaining gel. Alternatively or in addition, remaining gel indicator 24 may include an alphanumeric display, a mechanically operated dial or bar (e.g., coupled to a moving mechanical component of the dispensing mechanism, or electrically, electronically, or otherwise coupled so a sensor), or may otherwise indicate the amount of remaining gel in the gel container.

In some cases, remaining gel indicator 24, or a mechanism that is coupled to remaining gel indicator 24, may be coupled to an interlock system of the dispensing mechanism. Thus, the dispensing mechanism may be disabled from operating to attempt to dispense gel when the quantity of gel that remains in the gel container is less than a minimum quantity.

Alternatively or in addition to one or more of charge indicator 20, temperature indicator 22, and remaining gel indicator 24, indicator panel 18 or another component of handheld fingernail gel dispenser 10 may include one or more alarm indicators. For example, an alarm indicator may include one or more warning lights, one or more sound generators (e.g., to generate a tone, buzz, ring, or other type of waring sound), vibrators, or other indicators that are configured to generate a visible, audible, or haptic signal. For example, the alarm indicator may be activated when a battery charge, temperature, or amount of remaining gel falls below a threshold value or otherwise deviating from a predetermined range.

One or more operator controls 27 may be provided to control operation of handheld fingernail gel dispenser 10. For example, operator controls 27 may be configured to operate the dispensing mechanism of handheld fingernail gel dispenser 10, or to otherwise control operation of handheld fingernail gel dispenser 10. Various controls of operator controls 27 may be located in one region of the surface of handheld fingernail gel dispenser 10 or may be distributed among various sides or surfaces of handheld fingernail gel dispenser 10. The surfaces may include a side of handheld fingernail gel dispenser 10, as in the example, shown, or a top or bottom surface of handheld fingernail gel dispenser 10.

In the example shown, operator controls 27 include two pushbuttons. For example, the pushbuttons may include a pulse dispenser button 30. Depressing pulse dispenser button 30 may cause gel to be dispensed as long as pulse dispenser button 30 is depressed. Pushbuttons of operator controls 27 may include continuous dispense toggle button 32. For example, one push of continuous dispense toggle button 32 may cause gel to be dispensed continuously. For example, continuous dispensing may be useful when a large area of a fingernail is to be covered with gel (e.g., for repairing a fingernail or for preparing the fingernail for subsequent applications of gel or another substance). A subsequent push of continuous dispense toggle button 32 may cause the dispensing of the gel to stop. Thus, alternate pushes of continuous dispense toggle button 32 cause the dispensing mechanism of handheld fingernail gel dispenser 10 to alternate between operating to continuously dispense gel and stopping operation (e.g., in a standby or off mode). Alternatively or in addition, operator controls 27 may include one or more other controls for controlling operation of handheld fingernail gel dispenser 10.

An outer casing of handheld fingernail gel dispenser 10 may be ergonomically designed to enable comfortable holding and operation of handheld fingernail gel dispenser 10 using a single hand. Placement of operator controls 27 may be designed so as to enable convenient operation of operator controls 27 by fingers of the hand that is holding handheld fingernail gel dispenser 10.

For example, handheld fingernail gel dispenser 10 may be shaped and designed so as to be grasped from above by a user, with the palm of the user's hand in contact with gel container access cover 26. The user's thumb may operate operator controls 27 to control dispensing of the gel from handheld fingernail gel dispenser 10. In the example shown, handheld fingernail gel dispenser 10 is configured so as to be held and operated as described by a left-handed user. A handheld fingernail gel dispenser 10 designed for use by a right-handed user may have operator controls 27 placed on the opposite side. Alternatively or in addition, operator controls 27 may be configured for operation by an index finger or middle finger of a right-handed user.

Alternatively or in addition, handheld fingernail gel dispenser 10 may be configured to be cradled in the user's hand. In this case, handheld fingernail gel dispenser 10 may rest on the user's palm while the user's thumb and fingers are curled upward around the sides of handheld fingernail gel dispenser 10. When handheld fingernail gel dispenser 10 is held in this manner, indicator panel 18 may be readily visible to the user when handheld fingernail gel dispenser 10 is in use. When held in this manner, operator controls 27 may be configured to operated by the user's thumb (e.g., by a right-handed user in the example shown), or by the user's fingers, e.g., one or both of the index finger and the middle fingers (e.g., by a left-handed user in the example shown).

Different designs of handheld fingernail gel dispenser 10, including placement of operator controls 27, may be suited for different user preferences (e.g., right- or left-handedness, overhand or underhand grasping, or other preferences). In some cases, some controls of operator controls 27 may be located on one side or surface of handheld fingernail gel dispenser 10, while others are located on other surfaces. Operator controls For example,

Gel container access cover 26 of handheld fingernail gel dispenser 10 may be opened to enable access to, e.g., removal or insertion of, a gel container.

FIG. 3 schematically illustrates the handheld fingernail gel dispenser shown in FIG. 2 with its gel container access cover removed.

In the example shown, gel container access cover 26 has been removed from dispenser casing 13.

Control circuitry 44 is mounted on circuit board 54 and may be configured to control operation of one or more components or mechanisms of handheld fingernail gel dispenser 10. Such components may include, for example, a dispensing mechanism, a heater or heating mechanism, indicator panel 18, or other components of handheld fingernail gel dispenser 10. Control circuitry 44 may include one or more processing devices that are configured to operate in accordance with programmed instructions. Control circuitry 44 may include data storage. The data storage devices may include one or more fixed or removable, volatile or nonvolatile memory or data storage devises. The data storage may be utilized to store one or more of programmed instructions and parameters for operation of control circuitry 44, results of operation of control circuitry 44 (e.g., a sensed value, or other result), or other data.

In the example, shown, gel container 48 is in the form of a cylindrical canister. In other examples, the gel container may have another shape.

In some cases, a gel container 48 may include an identifying label. For example, the identifying label may include a radiofrequency identification (RFID) tag, an optical barcode, a two-dimensional barcode, a color code, printed circuitry, or another type of label. Handheld fingernail gel dispenser 10, e.g., gel container cavity 51, may be provided with a reader or sensor that is configured to read the label. For example, a reader may include an RFID transponder, an optical scanner, or another appropriate type of reader. The label may indicate or may be associated with data that indicates (e.g., in a database or stored table) one or more characteristics of gel container 48 or its contents. Such characteristics may include, for example, a length of volume of gel container 48, a type of gel contained in gel container 48, an optimum working temperature for the gel contained in gel container 48, an expiration date, a lot number or production date, a brand, or other characteristics of gel container 48 or its contents. In some cases, control circuitry 44 may be configured to operate one or more components of handheld fingernail gel dispenser 10 in accordance with the information that is retrieved by reading a label of a gel container 48.

When gel container access cover 26 is removed from dispenser casing 13 (as in the example shown) or otherwise opened, gel container 48 may be removed from gel container cavity 51 of handheld fingernail gel dispenser 10, or a gel container 48 may be inserted into gel container cavity 51. When gel container 48 is inserted into gel container cavity 51, container nozzle 49 may be inserted into proximal end 28 a of dispenser nozzle 28.

An end of gel container 48 opposite container nozzle 49 includes container plunger 50. When container plunger 50 is pushed into gel container 48, gel that is contained by gel container 48 may be forced outward via container nozzle 49. The gel that is forced outward through container nozzle 49 may thus be forced into dispenser nozzle 28, and out of handheld fingernail gel dispenser 10 via dispenser nozzle 28.

In the example shown, when gel container 48 is inserted into gel container cavity 51 of handheld fingernail gel dispenser 10, the dispensing mechanism of handheld fingernail gel dispenser 10 may be operated to advance dispensing rod 46 toward container plunger 50. Continued advancing of dispensing rod 46 may push container plunger 50 into gel container 48, thus dispensing the fingernail gel from the interior of gel container 48 via container nozzle 49 and dispenser nozzle 28.

Control circuitry 44 may be configured to retract dispensing rod 46 from container plunger 50 and gel container 48 when gel container access cover 26 is opened. For example, dispenser casing 13 or another part of handheld fingernail gel dispenser 10 may be provided with one or more sensing mechanisms to sense when gel container access cover 26 is opened. For example, a sensing mechanism may include a circuit that is closed when gel container access cover 26 is closed (e.g., by electrical contacts, by pressure on a pushbutton, reflection of an optical beam, or otherwise), or another type of sensor or sensing mechanism.

After gel container access cover 26 is opened, operation of the dispensing mechanism may be disabled until the sensing mechanism indicates that gel container access cover 26 is closed. Alternatively or in addition, operation of the dispensing mechanism may be disabled until a sensing mechanism (e.g., including electrical contacts, a pushbutton, an optical beam that is blocked or reflected, or otherwise) indicates that a gel container 48 is inserted into gel container cavity 51.

In the example shown, heating elements 42 are mounted on circuit board 54. Alternatively or in addition, heating elements 42 may be mounted elsewhere near or within gel container cavity 51. Heating elements 42 may be resistive heating elements, or may be otherwise operated. When gel container 48 is inserted into gel container cavity 51, heating elements 42 may at least partially surround gel container 48. Control circuitry 44 may be operated (e.g., by operation of heater control 16) to cause electrical current to flow through, or otherwise operate, heating elements 42. When heating elements 42 are operated, heating elements 42 may generate sufficient heat so as to warm the gel within gel container 48 to a desired temperature. Control circuitry 44 may be configured to stop operation of heating elements 42 when a sensed temperature of the gel within gel container 48, or a sensed temperature at a location within handheld fingernail gel dispenser 10 that is indicative of a temperature of the gel within gel container 48, indicates that the gel has been heated to a desired temperature.

In some cases, e.g., where electrical power for operation of heating elements 42 is only provided when handheld fingernail gel dispenser 10 is inserted into charger base 12, gel container cavity 51 may be provided with thermal insulation to retard cooling of the gel below a predetermined temperature. In some cases, control circuitry 44 may be configured to stop operation of the dispensing mechanism when the temperature of the gel drops below a predetermined temperature.

FIG. 4 schematically illustrates an exploded view of components of the handheld fingernail gel dispenser shown in FIG. 2.

In the example shown, dispenser casing 13 has been disassembled by separation of upper casing section 13 b from lower casing section 13 a so as to expose motorized dispensing mechanism 61.

In the example shown, temperature sensor 56 is mounted on circuit board 54 near heating elements 42. For example, temperature sensor 56 may be mounted on a side of circuit board 54 that opposite the side to which heating elements 42 are mounted, as in the example shown, or elsewhere. Control circuitry 44 may be configured to operate one or more of heating elements 42 and motorized dispensing mechanism 61 in accordance with a temperature that is sensed by temperature sensor 56.

Control circuitry 44 may communicate with operator control circuit 52. For example, operation of one or more of operator controls 27 may cause operator control circuit 52 to send a control signal to control circuitry 44. In response, control circuitry 44 may control operation of motorized dispensing mechanism 61 in accordance with operation of operator controls 27.

One or more components or mechanisms of handheld fingernail gel dispenser 10 may be powered by storage battery 62. For example, storage battery 62 may power one or more of control circuitry 44, motorized dispensing mechanism 61, heating elements 42, or other components.

Motor 58 of motorized dispensing mechanism 61 may be powered by storage battery 62. For example, motor 58 may be controlled by control circuitry 44 to rotate in a forward direction, or in an opposite reverse direction. Transmission 60 may convert rotational motion of motor 58 into linear motion of dispensing rod 46. Thus, control circuitry 44 may control motor 58 to rotate in a forward direction to advance dispensing rod 46 to push against container plunger 50 to dispense gel from gel container 48. Similarly, control circuitry 44 cause motor 58 to rotate in a reverse direction to retract dispensing rod 46 from container plunger 50 and gel container 48, e.g., to enable removal of gel container 48 from gel container cavity 51.

A position of dispensing rod 46 may be sensed by rod position sensor 64. For example, rod position sensor 64 may include a linear potentiometer. Alternatively or in addition, rod position sensor 64 may include another type of electromechanical, optical, acoustic, electromagnetic, or other sensor for measuring a linear position of dispensing rod 46.

FIG. 5 schematically illustrates a dispensing mechanism of the handheld fingernail gel dispenser shown in FIG. 4. FIG. 6 shows another view of the dispensing mechanism shown in FIG. 5.

Operation of motor 58 may rotate motor shaft 72. Transmission 60 may include a plurality of gears, as in the example shown. Alternatively or in addition, the transmission may include one or more other components, e.g., pulleys, levers, or other components. A gear ratio, or other characteristic of transmission 60, may cause a rotation of motor shaft 72 by motor 58 to be converted to a slower motion of dispensing rod 46. The resulting mechanical advantage may operation of motorized dispensing mechanism 61 by a relatively small motor 58. The mechanical advantage may enable motor 58 to advance dispensing rod 46 against container plunger 50, overcoming the mechanical resistance of the viscous and incompressible gel. Thus, operating time after charging storage battery 62 may be greater than would be possible with a larger motor (e.g., and smaller mechanical advantage).

Drive gear 74 of transmission 60 is mounted on motor shaft 72 so as to rotate together with motor shaft 72. Transmission 60 is configured to transmit the rotation from drive gear 74 to driven gear 78. One or more components of motorized dispensing mechanism 61, such as motor 58, transmission 60, and dispensing rod 46, may be mounted on dispensing mechanism base 82.

In the example shown, the rotation axis of driven gear 78 is parallel to that of drive gear 74, and transmission 60 includes a single idler gear 76 that is intermediate between drive gear 74 and driven gear 78. Thus, in the example shown, driven gear 78 may rotate in the same direction as drive gear 74. In other examples, a transmission may include two or more intermediate gears, and the transmission may be configured such that the axis of rotation of the driven gear is not parallel to that of the drive gear.

In the example shown, threaded worm 80 is mounted on an axis of driven gear 78 so as to rotate together with driven gear 78. A proximal end of dispensing rod 46 is connected to dispensing rod base 70. Dispensing rod base 70 includes a bore with internal threading that is configured to engage the threading of threaded worm 80. Base tabs 84 extend laterally from dispensing rod base 70. Each base tab 84 is constrained to move within one of linear slots 86 in dispensing mechanism base 82. Thus, rotation of threaded worm 80 within the internal threading of dispensing mechanism base 82, together with the constraining of (e.g., prevention of rotation about thread worm 80 of) dispensing mechanism base 82 may cause dispensing mechanism base 82 to travel linearly along threaded worm 80 when threaded worm 80 is rotated.

Thus, operation of motor 58 to rotate motor shaft 72 in one direction may extend dispensing rod 46 distally out from dispensing mechanism base 82. Operation of motor 58 to rotate motor shaft 72 in the opposite direction may retract dispensing rod 46 proximally into dispensing mechanism base 82.

Motion of dispensing rod 46 may operate rod position sensor 64. In the example shown, base tabs 84 of dispensing rod base 70 are configured to couple to position sensor tab 68 of rod position sensor 64. For example, when bores of base tabs 84 are aligned with a bore of position sensor tab 68, pin 66 may be inserted into the bores so as to couple dispensing rod base 70 to position sensor tab 68.

When motor 58 is operated to extend or retract dispensing rod 46, base tabs 84 may slide along linear slots 86 through a displacement that is equal to that of dispensing rod 46. Thus, when base tabs 84 are coupled to position sensor tab 68, position sensor tab 68 may also be displaced by a displacement equal to that of dispensing rod 46.

Rod position sensor 64 may be configured to produce a signal that is indicative of a position of position sensor tab 68 on rod position sensor 64. In the example shown, rod position sensor 64 includes a linear potentiometer with position sensor tab 68 attached to a movable wiper contact of the potentiometer. In this case, circuitry that is in communication with control circuitry 44 may include at least two electrical leads. The electrical leads are each in electrical contact with one of a pair of potentiometer contacts 88, such that the electrical resistance between those two potentiometer contacts 88 changes with the position of position sensor tab 68 and the wiper contact. Control circuitry 44 may include suitable ohmmeter, bridge circuitry, or other circuitry to enable measurement of the electrical resistance between those two potentiometer contacts 88, or of a voltage that is indicative of the resistance.

The measured resistance (or voltage indicative of the resistance) between potentiometer contacts 88 may be indicative of a position of position sensor tab 68 on rod position sensor 64. The measured position of position sensor tab 68 may be indicative of the position of the distal end of dispensing rod 46, e.g., relative to dispensing mechanism base 82 or another reference position.

A measured or indicated position of the distal end of dispensing rod 46 may be indicative of the position of container plunger 50 within gel container 48. For example, the position of gel container 48 relative to dispensing mechanism base 82 or the other reference position may be known, e.g., fixed by the position of gel container cavity 51 relative to the reference position or otherwise known. The length of gel container 48 may also be known. For example, all compatible gel containers 48 may have identical lengths. Alternatively or in addition, handheld fingernail gel dispenser 10 may include a sensor (e.g., one or more mechanical, optical, electromagnetic, other sensors) that senses a length of an installed gel container 48. Alternatively or in addition, gel container 48 may be provided with labelling that is indicative of a length of gel container 48, and handheld fingernail gel dispenser 10 may be provided with a reader and processing circuitry that is configured to read and interpret the labeling. Thus, a position of container plunger 50 within gel container 48 may be indicative of a volume of gel that remains inside of gel container 48. Control circuitry 44 may thus operate remaining gel indicator 24 of indicator panel 18 in accordance with the measured position of position sensor tab 68, and the resistance of the linear potentiometer of rod position sensor 64.

Alternatively or in addition to a linear potentiometer, rod position sensor 64 may include one or more other mechanisms for measuring a position of one or more of base tab 84, dispensing rod base 70, or of dispensing rod 46. For example, a rod position sensor may include a transmission that converts linear motion of dispensing rod 46 to circular motion to operate a rotary potentiometer, may include an optical, electromagnetic or other sensor for detecting a position of dispensing rod 46, may be coupled to a mechanical pointer or dial that may be visible on handheld fingernail gel dispenser 10 (e.g., via a window), or may be otherwise configured to detect or display a position of dispensing rod 46.

Different embodiments are disclosed herein. Features of certain embodiments may be combined with features of other embodiments; thus, certain embodiments may be combinations of features of multiple embodiments. The foregoing description of the embodiments of the invention has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed. It should be appreciated by persons skilled in the art that many modifications, variations, substitutions, changes, and equivalents are possible in light of the above teaching. It is, therefore, to be understood that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.

While certain features of the invention have been illustrated and described herein, many modifications, substitutions, changes, and equivalents will now occur to those of ordinary skill in the art. It is, therefore, to be understood that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention. 

1. A fingernail gel dispenser comprising: a container for holding fingernail gel; a heating element, wherein the heating element at least partially surrounds the gel container, for heating the fingernail gel in the container; a dispenser nozzle; a motorized dispensing mechanism that is configured to dispense the fingernail gel from the container through the dispenser nozzle; and a user-operable control that is configured to enable a user of the dispenser to operate the dispensing mechanism with a finger of a hand that is holding the dispenser.
 2. The dispenser of claim 1, wherein the dispenser nozzle is removable from the dispenser and replaceable onto the dispenser.
 3. The dispenser of claim 1, wherein the dispenser nozzle includes a bend.
 4. The dispenser of claim 1, wherein the container is removable from the dispenser.
 5. The dispenser of claim 1, wherein the gel is dispensed from the container via a nozzle of the container.
 6. The dispenser of claim 1, wherein the container nozzle is insertable into a distal end of the dispenser nozzle.
 7. The dispenser of claim 1, wherein the container comprises a plunger configured to be pushed into the container to dispense the gel from the container.
 8. The dispenser of claim 7, wherein the dispensing mechanism comprises a rod, the dispensing mechanism configured to advance the rod against the plunger to dispense the gel from the container.
 9. The dispenser of claim 8, wherein the dispensing mechanism comprises a transmission to convert a rotation of a shaft of a motor of the dispensing mechanism to a linear motion of the rod.
 10. The dispenser of claim 9, wherein the transmission comprises a threaded worm.
 11. The dispenser of claim 8, wherein the rod is coupled to a position sensor for sensing a position of the rod.
 12. The dispenser of claim 11, wherein the position sensor comprises a potentiometer.
 13. The dispenser of claim 12, wherein a base of the rod that is configured to move along a threated worm of the dispensing mechanism is coupled to movable wiper contact of the potentiometer.
 14. The dispenser of claim 13, wherein the potentiometer is a linear potentiometer.
 15. The dispenser of claim 11, wherein the dispenser comprises an indicator for indicating an amount of the gel that remains in the container based on the position that is sensed by the position sensor.
 16. The dispenser of claim 1, wherein the dispenser comprises a temperature sensor to sense a temperature indicative of a temperature of the gel in the container.
 17. The dispenser of claim 1, wherein an operator control of the dispenser is operable to cause the dispensing mechanism to continuously dispense the gel from the container and to stop dispensing the gel from the container.
 18. The dispenser of claim 1, wherein an operator control is configured to cause the dispensing mechanism to dispense the gel as long as the operator control is depressed, and to stop dispensing the gel from the container when the operator control is released.
 19. The dispenser of claim 1, wherein the dispenser comprises a storage battery.
 20. The dispenser of claim 19, wherein a control for operating the heater is located on a charger base for charging the storage battery. 